NonCee references in PKS Experion allow a Control Strategy executing in a CEE environment to reference parameter data in other node types such as LCN and SCADA. Typically in an ACE CEE host, we would use an OPCG for referencing other node types, but OPCG cannot be used in a C300 CEE strategy. Using a NonCee reference type allows the data to be treated as CDA.
Control Builder supports adding what is called NonCee parameter references by simply specifying the EntityName.ParameterName reference as either a pin connection or reference within an AuxCalc expression. The caveat of this is that the Entity reference must be be resolvable to Control Builder at the time the reference is made. For Scada type references, this means the Scada entity must already be loaded to the Server and for LCN references the entity must also be loaded and reachable through TPNServer.
Control Modules when imported and exported contain special handling and identification for all NonCee references within blocks embedded in the Control Module. Control Architect generates this special identification for NonCee reference types, but requires the user to formally identify what references are NonCee types for them to be identified and generated as NonCee reference types. Control Architect supports both pin connection reference types and references within expressions typical of AuxCalc, EnAuxCalc, and RegCalc block types.
Expression & Pin Connection NonCee References
To specify that an Entity.Parameter reference in an expression or a connection is a NonCee type, the user will append "$N$" to the reference value, which will instruct the conversion execution to treat the Parameter reference as a NonCee type. The below Excel Data Source examples shows how to use this format when developing expressions that contain NonCee reference types. If this format is not applied, then the reference is treated as a normal CEE reference type.
Example where connection references are made either to a NonCee Parameter reference or an OPC Gateway reference. Note that the format "$N$" is only applied as a suffix to the connection references that are not routed through an OPCG.
